Ramendra Pratap – författare

Heterocycles are ubiquitously present in nature and occupy a unique place in organic chemistry as they are part of the DNA and haemoglobin that make life possible. The Chemistry of Heterocycles covers an introduction to the topic, followed by a chapter on the nomenclature of all classes of isolated, fused and polycyclic heterocycles. The third chapter delineates the highly strained three membered N,O and S containing aromatic and non-aromatic heterocycles with one and more than one similar and dissimilar heteroatom. The four-membered heterocycles are abundantly present in various natural and synthetic products of pharmacological importance. This chapter describes the natural abundance, synthesis, chemical reactivity, structural features and their medicinal importance. This class of compounds are present as sub-structures in penicillin and cytotoxic Taxol. Lastly, a chapter on the natural abundance, synthesis, chemical reactivity and pharmacological importance of 5-membered heterocycles with N,O,S heteroatom is covered. The chemistry of heterocycles with mixed heteroatom such as, N-S, N-O, N-S etc. is also described.

Gives in-depth, clear information about various systems of nomenclature along with widely acceptable IUPAC system for naming various classes of heterocycles Provides complete information about natural occurrences, synthesis, chemical reactivity, pharmacological importance of heterocycles and their application in material science Highly relevant for graduate students and researchers, providing updated information about various isolated and fused N,O and,S containing heterocycles

The Chemistry of Heterocycles: Chemistry of Six to Eight Membered N,O, S, P and Se Heterocycles details the chemistry, behavior and potential of these important structures. The book presents a practical guide to international nomenclature, including discussions of fused ring systems, heteroatoms with abnormal valences, and bridged, spiro and polycyclic heterocycles. Three membered heterocycles are then the focus, along with their thermodynamic properties and importance in natural products, medicines, materials, and their unique aspects, such as strain, basicity and reactivity. Additional chapters cover 100 key heterocycle structures, from Azetidines, Pyrroles and Pyridines, to Benzoxepines and Oxocanes.

Final chapters explore cutting-edge advances in the development of phosphorus and selenium based heterocycles.

Provides clear, detailed information on each heterocyclic group, including structural features, such as ring strain, basicity, synthesis and reactivity towards electrophilic and nucleophilic reagents Highlights the latest advances in the field, including phosphorous and selenium-based heterocycles supported by numerous illustrations Includes details of functionalized heterocycles used as synthons for the construction of various arenes and heteroarenes

Isolated Pyranones: Multifaceted Building Blocks for Molecular Diversity covers the latest findings on synthesis and chemical reactivity of highly functionalized pyran-2-ones and pyran-4-ones, their reduced analogs and compounds derived from them through chemical reactions, and their applications in drug discovery and material sciences. It covers the mechanisms of the reaction and step by step formation of final products. Numerous pyranones from natural and synthetic origins, as well as their derived products, have shown diverse pharmacological activities and some are in clinical use. The applications of these compounds are not limited to drug development and imaging agents, and they are also used in material science as organic semiconductors, liquid crystals, organic light emitting diodes (OLEDs), organic catalysts, solid state lasers, photovoltaic and photoconductive devices. The book is ideal for organic, bioorganic, physical, material and natural product chemists working to generate diverse molecular entities through ring transformation reactions of pyranones, and those working in material science to generate new chemical entities. Includes various synthetic methodologies for generating molecular diversity Covers the applications of functionalized pyranones as substrates for generating new molecular entities such as arenes, heteroarenes, oligoarenes, spiroarenes, and condensed-oligoarenes through base-induced ring transformation, substitution-cyclization and cycloaddition reactions Discusses numerous compounds derived from pyranones that are useful as organic semiconductors, liquid crystals, organic catalysts, organic light emitting diodes (OLEDs), solid state lasers, photovoltaic and photoconductive devices